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Presumptive Drug Testing Kits for all your presumptive testing situations. NarcoPouch kits consist of hermetically sealed ampoules prefilled with precise amounts of testing chemicals inside a plastic outer pouch. Small amounts of an unknown substance are loaded into the pouch, the ampoules are broken, and the pouch agitated. NarcoPouch® tests show the color(s) of a positive reaction directly in front of the ampoule being broken. On multiple ampoule tests, color reactions are numbered to correspond to the order in which the ampoules are broken.
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